#centerDivEx {
  position: absolute;
  height: 100%;
  width: 50%;
  top: 0;
  left: 0;
  display: none;
}

#mars3dContainerEx {
  height: 100%;
  width: 100%;
}
.centerDiv-container {
  position: absolute;
  height: 100%;
  width: 100%;
  overflow: hidden;
}
